Automobile driving hand feeling simulation device with small occupied area

Abstract

The utility model relates to an automobile driving hand feeling simulation device with a small occupied area, and relates to the technical field of steering system testing, the automobile driving hand feeling simulation device comprises a rack, a testing space is formed in the rack, a seat is fixedly installed on a bottom plate of the rack, and the seat is located in the testing space; a base is mounted at the bottom of the rack, a mounting base is mounted on the base, and a lower steering shaft of the electric power steering system is detachably mounted on the mounting base; the control host is located in the workshop and used for inputting a set pressure signal and a starting signal; the pressurizing mechanism is fixedly mounted between the mounting base and the base and is used for receiving the starting signal and applying pressure to the mounting base; the control mechanism is used for controlling the pressurizing mechanism to stop continuous pressurizing when the pressure borne by the machine base reaches a set pressure value. The hand feeling simulation test of the steering system under the vehicle body with different weights can be realized on one hand feeling simulation device, and the occupation of the hand feeling simulation test on the workshop space is reduced.

Description

Technical Field

[0001] This application relates to the field of steering system testing technology, and in particular to a small-footprint vehicle driving feel simulation device. Background Technology

[0002] Currently, electric power steering (EPS) systems are increasingly being used in various vehicle models. Since EPS systems primarily use a power steering motor to drive a worm gear reducer to achieve high torque output and thus assist the steering system, this is also a major source of noise and abnormal sounds. The noise generated by the power steering motor is electromagnetic noise, while the noise generated by the worm gear reducer is gap impact noise. Furthermore, the force applied to the steering gear under different rack loads and the smoothness of the feel also affect the steering gear's performance. Therefore, the noise level and smoothness of the feel of an EPS system are important indicators for evaluating its performance. These operating conditions are judged by the customer's subjective evaluation of the steering system, and are typically collected and tested using subjective evaluation testing devices.

[0003] In the prior art, common subjective driving simulation devices for automotive steering systems mainly include a frame, a seat fixedly mounted on the frame, a mounting base mounted on the front of the frame, and the mounting base fixedly mounted on the base plate of the frame. The lower steering shaft of the electric power steering system is fixed to the mounting base with screws, and the turntable connected to the upper steering shaft is mounted inside the frame and positioned directly opposite the seat inside the frame. When conducting a feel test, the user can sit in the seat and hold the turntable to experience the feel of the electric power steering system.

[0004] However, existing subjective driving simulation devices for automotive steering systems cannot simulate the feel of different vehicle weight loads in a single device. Multiple subjective driving simulation devices for automotive steering systems need to be set up for simulation, which is costly and takes up a lot of workshop space, so there is room for improvement. Utility Model Content

[0005] In order to realize the steering feel simulation test of the vehicle body with different weights on a single steering feel simulation device and reduce the space occupied by the steering feel simulation test in the workshop, this application provides a small-footprint vehicle driving feel simulation device.

[0006] This application provides a small-footprint car driving feel simulation device using the following technical solution:

[0007] A small-footprint car driving feel simulation device includes a frame, a test space formed inside the frame, and a seat fixedly installed on the base plate of the frame, the seat being located within the test space;

[0008] A base is mounted on the bottom of the frame, and a mounting bracket is mounted on the base. The lower steering shaft of the electric power steering system is detachably mounted on the mounting bracket; and:

[0009] The control host, located inside the workshop, is used to input set pressure signals and start signals;

[0010] A pressure boosting mechanism is fixedly installed between the mounting base and the base, and is used to receive the start signal and apply pressure to the mounting base;

[0011] The pressure control module has its signal input terminal connected to the signal output terminal of the pressurizing mechanism and the control host, and its signal output terminal connected to the signal input terminal of the pressurizing mechanism. It is used to control the pressurizing mechanism to stop continuous pressurization when the pressure on the base reaches the set pressure value.

[0012] By adopting the above technical solution, when testing the steering system's feel, the user can sit in the seat, hold the turntable with both hands, and then, according to the weight requirements of the vehicle being tested, input a set pressure signal and a start signal through the control unit. The pressurization mechanism receives the start signal and the set pressure signal and applies pressure to the mounting base, increasing the friction of the steering system by ensuring the mounting base reaches the set pressure value. When simulating tests on vehicles of different weights, the operator can input different set pressures through the control unit to simulate the steering system feel test on a single device, effectively improving the integration of the feel simulation device and reducing the space occupied by the feel simulation testing device in the workshop.

[0013] Preferably, the pressurizing mechanism includes a worm gear screw jack, the body of which is fixedly mounted on a base, and the bottom end of the screw of which is fixedly mounted on a mounting base.

[0014] By adopting the above technical solution, during actual testing, the servo motor of the worm gear screw jack drives the internal worm gear to rotate, causing the screw to press down. This applies downward pressure to the mounting base, increasing the pressure on the electric power steering system mounted on the base. By adjusting the downward movement of the screw using the servo motor of the worm gear screw jack, driving conditions under different weight loads can be simulated.

[0015] Preferably, the pressure control module includes:

[0016] A pressure detection unit is used to detect the pressure between the mounting base and the base and output a sensed pressure signal;

[0017] The microcontroller has its signal input terminal connected to the signal output terminal of the pressure detection unit and the control host, and is used to receive the sensed pressure signal and the set pressure signal, and output a stop control signal when the sensed pressure reaches the set pressure.

[0018] The signal input terminal of the servo motor of the worm gear screw jack is connected to the signal output terminal of the microcontroller. The servo motor receives the stop control signal and stops driving.

[0019] By adopting the above technical solution, the pressure detection unit detects the pressure between the mounting base and the base. By comparing the sensed pressure with the set pressure through the microcontroller, the servo motor can be controlled to stop driving when the sensed pressure between the mounting base and the base reaches the set pressure. This can achieve the technical effects of pressure control and simulating different vehicle body weights.

[0020] Preferably, a tire connecting mechanism is fixedly connected to each end of the mounting base, and a connecting rod is fixedly installed on each of the tire connecting mechanisms;

[0021] Two connecting seats are fixedly connected to the mounting base, and the two connecting rods are respectively fixedly connected to the two connecting seats;

[0022] The pressure detection unit includes a pressure sensor. The end of the connecting rod is fixedly connected to a mounting part. The mounting part has a mounting groove adapted to the pressure sensor. A pressure rod is fixedly connected to the connecting seat. The pressure sensor includes a sensing groove. The bottom of the pressure rod abuts against the bottom of the sensing groove. The pressure sensor detects the pressure between the mounting base and the base and outputs the sensed pressure signal.

[0023] By adopting the above technical solution, during the process of the servo motor driving the screw in the worm gear screw jack to press down and apply pressure to the mounting base, the connecting rods on the tire connection mechanisms at both ends of the mounting base move down to drive the pressure rods down. The pressure sensor can detect the pressure between the connecting seat and the connecting rod and output the induced pressure signal, which can achieve the technical effect of automatically detecting the pressure borne by the mounting base. Combined with the microcontroller, the pressure borne by the mounting base can be controlled to simulate the feel test under different vehicle weights.

[0024] In summary, the car driving feel simulation device with a small footprint proposed in this application has the following beneficial technical effects:

[0025] 1. When testing the steering system feel, the user can sit in the seat and hold the turntable with both hands. Then, according to the weight requirements of the vehicle being tested, the user can input a set pressure signal and a start signal through the control host. After receiving the start signal and the set pressure signal, the pressurization mechanism applies pressure to the mounting base, so that the mounting base bears the pressure to the set pressure value, increasing the friction of the steering system. When simulating vehicle tests of different weights, the operator can input different set pressures through the control host to simulate the steering system feel test of different weight vehicles on a single simulation device. This can effectively improve the integration of the feel simulation device and reduce the space occupied by the feel simulation test device in the workshop. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the overall structure of the tactile simulation device in an embodiment of this application.

[0027] Figure 2 This is a schematic diagram illustrating the overall structure of the pressure detection unit in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Test space; 12. Seat; 13. Base; 14. Mounting base; 141. Tire connection mechanism; 142. Connecting rod; 143. Connecting seat; 144. Mounting part; 145. Pressure rod; 2. Electric power steering system; 3. Pressure boosting mechanism; 32. Worm gear screw jack; 33. Servo motor; 4. Pressure control module; 41. Pressure sensor. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] Example

[0031] This application discloses a small-footprint car driving feel simulation device. (See also...) Figure 1 It mainly includes a frame 1, a test space 11 formed inside the frame 1, and a seat 12 fixedly installed on the base plate of the frame 1, with the seat 12 located inside the test space 11.

[0032] A base 13 is installed at the bottom of the frame 1, and a mounting base 14 is mounted on the base 13. The lower steering shaft of the electric power steering system 2 is detachably mounted on the mounting base 14. The system also includes: a control host located in the workshop, used to input set pressure signals and start signals; a pressure boosting mechanism 3 fixedly installed between the mounting base 14 and the base 13, used to receive start signals and apply pressure to the mounting base 14; and a pressure control module 4, whose signal input terminal is connected to the signal output terminal of the pressure boosting mechanism 3 and the control host, and whose signal output terminal is connected to the signal input terminal of the pressure boosting mechanism 3, used to control the pressure boosting mechanism 3 to stop continuous pressure boosting when the pressure on the mounting base reaches the set pressure value.

[0033] During steering system feel testing, the user sits in seat 12, holds the turntable with both hands, and then inputs a set pressure signal and a start signal to the control unit according to the weight requirements of the vehicle being tested. The pressurization mechanism 3 receives the start signal and the set pressure signal and applies pressure to the mounting base 14, increasing the friction of the steering system by reaching the set pressure value. When simulating tests on vehicles of different weights, the operator can input different set pressures to the control unit to simulate the steering system feel test on a single device, effectively improving the integration of the feel simulation device and reducing the space occupied by the feel simulation testing device in the workshop.

[0034] In this embodiment, the pressurizing mechanism 3 is a worm gear screw jack 32. The body of the worm gear screw jack 32 is fixedly installed on the base 14, and the bottom end of the screw of the worm gear screw jack 32 is fixedly installed on the mounting base 13.

[0035] During actual testing, the servo motor 33 of the worm gear screw jack 32 drives the internal worm gear to rotate, causing its body to press down. This applies downward pressure to the mounting base 13, increasing the pressure on the electric power steering system 2 mounted on the mounting base 13. By adjusting the downward pressure of the worm gear screw jack 32's base using the servo motor, driving conditions under different weight loads can be simulated.

[0036] It should be noted that, in this embodiment, the worm gear screw jack 32 is prior art, which mainly consists of a body, worm gear, worm, lead screw, and servo motor 33. The worm gear is rotatably installed in the body, the worm is rotatably installed in the body, and the worm and worm gear are connected by transmission. The drive shaft end of the servo motor 33 is connected to the worm through a coupling. The lead screw is threaded in the middle of the worm gear. By driving the worm to rotate through the servo motor 33, the worm gear can be rotated synchronously, and the body can be driven to move up and down along the axis of the lead screw. The body of the worm gear screw jack 32 can be driven to press down to apply pressure to the mounting base 13 to simulate the vehicle body load.

[0037] In the embodiments of this application, reference is made to Figure 1 and Figure 2 The pressure control module 4 includes: a pressure detection unit, used to detect the pressure between the mounting base 14 and the base 13 and output a sensed pressure signal; a microcontroller, whose signal input terminal is connected to the signal output terminal of the pressure detection unit and the control host, used to receive the sensed pressure signal, set the pressure signal, and output a stop control signal when the sensed pressure reaches the set pressure; and a servo motor 33 whose signal input terminal is connected to the signal output terminal of the microcontroller, and the servo motor 33 receives the stop control signal and stops driving.

[0038] The pressure detection unit detects the pressure between the mounting base 14 and the base 13. By comparing the sensed pressure with the set pressure through the microcontroller, the servo motor 33 can be controlled to stop driving when the sensed pressure between the mounting base 14 and the base 13 reaches the set pressure. This can achieve the technical effect of pressure control and simulating different vehicle body weights.

[0039] Reference Figure 1 and Figure 2 The mounting base 14 has tire connecting mechanisms 141 fixedly connected to both ends, and connecting rods 142 fixedly installed on the tire connecting mechanisms 141. Two connecting seats 143 are fixedly connected to the mounting base 14, and the two connecting rods 142 are fixedly connected to the two connecting seats 143 respectively. The pressure detection unit includes a pressure sensor 41. The end of the connecting rod 142 is fixedly connected to a mounting part 144. The mounting part 144 has a mounting groove that is adapted to the pressure sensor 41. A pressure rod 145 is fixedly connected to the connecting seat 143. The pressure sensor 41 includes a sensing groove. The bottom of the pressure rod 145 abuts against the bottom of the sensing groove. The pressure sensor 41 detects the pressure between the mounting base 14 and the base 13 and outputs a sensing pressure signal.

[0040] During the process of the worm gear screw jack 32 applying pressure to the mounting base 14, the connecting rods 142 on the tire connection mechanisms 141 at both ends of the mounting base 14 move down to drive the pressure rods 145 to press down. The pressure sensor 41 can detect the pressure between the connecting seat 143 and the connecting rod 142 and output the sensing pressure signal, which can realize the technical effect of automatically detecting the pressure borne by the base. Combined with the microcontroller, the pressure borne by the mounting base 14 can be controlled to simulate the feel test under different vehicle weights.

[0041] The implementation principle of a small-footprint car driving feel simulation device according to this application embodiment is as follows: When testing the steering system feel, the user can sit in seat 12 and hold the turntable with both hands. Then, according to the weight requirements of the test vehicle, the user can input a set pressure signal and a start signal through the control host. After receiving the start signal and the set pressure signal, the pressurization mechanism 3 applies pressure to the mounting base 14, so that the mounting base 14 bears the pressure to the set pressure value, increasing the friction of the steering system. When simulating vehicle tests of different weights, the operator can input different set pressures through the control host to simulate the steering system feel test of different weight vehicles on a single simulation device. This can effectively improve the integration of the feel simulation device and reduce the space occupied by the feel simulation test device in the workshop.

[0042] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A small-footprint car driving feel simulation device, characterized in that, Includes a frame (1), in which a test space (11) is formed, and a seat (12) is fixedly installed on the base plate of the frame (1), the seat (12) being located in the test space (11); The bottom of the frame (1) is equipped with a base (13), and a mounting base (14) is mounted on the base (13). The lower steering shaft of the electric power steering system (2) is detachably mounted on the mounting base (14). as well as: The control host, located inside the workshop, is used to input set pressure signals and start signals; The pressurization mechanism (3) is fixedly installed between the mounting base (14) and the base (13) to receive the start signal and apply pressure to the mounting base (14); The pressure control module (4) has its signal input terminal connected to the signal output terminal of the boosting mechanism (3) and the control host, and its signal output terminal connected to the signal input terminal of the boosting mechanism (3). It is used to control the boosting mechanism (3) to stop continuous boosting when the pressure on the base reaches the set pressure value.

2. The car driving feel simulation device with a small footprint according to claim 1, characterized in that, The pressurizing mechanism (3) includes a worm gear screw jack (32), the body of which is fixedly mounted on the base (13), and the bottom end of the screw of which is fixedly mounted on the mounting base (14).

3. The car driving feel simulation device with a small footprint according to claim 2, characterized in that, The pressure control module (4) includes: The pressure detection unit is used to detect the pressure between the mounting base (14) and the base (13) and output a sensed pressure signal; The microcontroller has its signal input terminal connected to the signal output terminal of the pressure detection unit and the control host, and is used to receive the sensed pressure signal and the set pressure signal, and output a stop control signal when the sensed pressure reaches the set pressure. The signal input terminal of the servo motor (33) of the worm gear screw jack (32) is connected to the signal output terminal of the microcontroller. The servo motor (33) receives the stop control signal and stops driving.

4. The car driving feel simulation device with a small footprint according to claim 3, characterized in that, The mounting base (14) is fixedly connected to two ends of a tire connecting mechanism (141), and a connecting rod (142) is fixedly installed on the tire connecting mechanism (141). Two connecting seats (143) are fixedly connected to the mounting base (14), and the two connecting rods (142) are fixedly connected to the two connecting seats (143) respectively. The pressure detection unit includes a pressure sensor (41), and the end of the connecting rod (142) is fixedly connected to a mounting part (144). The mounting part (144) has a mounting groove that is adapted to the pressure sensor (41). A pressure rod (145) is fixedly connected to the connecting seat (143). The pressure sensor (41) includes a sensing groove. The bottom of the pressure rod (145) abuts against the bottom of the sensing groove. The pressure sensor (41) detects the pressure between the mounting base (14) and the base (13) and outputs the sensing pressure signal.

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